From 96cf8dffe4f7b0b910f790066ae622dc429eb522 Mon Sep 17 00:00:00 2001 From: Jannis Hoffmann Date: Tue, 9 Jul 2024 13:02:45 +0200 Subject: initial commit of version 23 --- socket_tcp.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 socket_tcp.c (limited to 'socket_tcp.c') diff --git a/socket_tcp.c b/socket_tcp.c new file mode 100644 index 0000000..1ff050e --- /dev/null +++ b/socket_tcp.c @@ -0,0 +1,63 @@ +#include +#include +#include +#include +#include +#include "close.h" /* better use unistd.h ? */ +#include "ndelay.h" +#include "socket_if.h" +#include "error.h" + +#ifndef EAFNOSUPPORT +#define EAFNOSUPPORT EINVAL +#endif + +/** + @file socket_tcp.c + @author djb, fefe, feh + @source ucspi-tcp6 + @brief setup TCP stream socket +*/ + +int socket_tcp4(void) +{ + int s; + + s = socket(AF_INET,SOCK_STREAM,0); + if (s != -1) + if (ndelay_on(s) == -1) { close(s); return -1; } + + return s; +} + +int socket_tcp6(void) +{ + int s; + + s = socket(AF_INET6,SOCK_STREAM,0); + if (s != -1) + if (ndelay_on(s) == -1) { close(s); return -1; } + + return s; +} + +int socket_tcp(void) +{ + int s; + + s = socket(AF_INET6,SOCK_STREAM,0); + if (s == -1) + if (errno == EINVAL || errno == EAFNOSUPPORT || errno == EPROTO || errno == EPROTONOSUPPORT) + s = socket(AF_INET,SOCK_STREAM,0); + + if (s != -1) + if (ndelay_on(s) == -1) { close(s); return -1; } + + return s; +} + +int socket_tcpnodelay(int s) +{ + int opt = 1; + return setsockopt(s,IPPROTO_TCP,1,&opt,sizeof(opt)); /* 1 == TCP_NODELAY */ +} -- cgit v1.2.3